static int pnpacpi_set_resources()

in pnpacpi/core.c [49:88]

• 32 lines of code
• 9 McCabe index (conditional complexity)

static int pnpacpi_set_resources(struct pnp_dev *dev)
{
	struct acpi_device *acpi_dev;
	acpi_handle handle;
	int ret = 0;

	pnp_dbg(&dev->dev, "set resources\n");

	acpi_dev = ACPI_COMPANION(&dev->dev);
	if (!acpi_dev) {
		dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__);
		return -ENODEV;
	}

	if (WARN_ON_ONCE(acpi_dev != dev->data))
		dev->data = acpi_dev;

	handle = acpi_dev->handle;
	if (acpi_has_method(handle, METHOD_NAME__SRS)) {
		struct acpi_buffer buffer;

		ret = pnpacpi_build_resource_template(dev, &buffer);
		if (ret)
			return ret;

		ret = pnpacpi_encode_resources(dev, &buffer);
		if (!ret) {
			acpi_status status;

			status = acpi_set_current_resources(handle, &buffer);
			if (ACPI_FAILURE(status))
				ret = -EIO;
		}
		kfree(buffer.pointer);
	}
	if (!ret && acpi_device_power_manageable(acpi_dev))
		ret = acpi_device_set_power(acpi_dev, ACPI_STATE_D0);

	return ret;
}